By the way, here’s the picture in case the footage above gets taken down again…

The steel post that he hit is about 1 meter to the right of the wall you can see him going over.
This is the last turn and in the video, you can see him drop down from the curve and hit the inside wall, fly off his sled, go over the short wall. and hit a steel post head first.
The fixes to the “safe” course were to raise the wall all along the section where you can see it and to move the start line down the run to reduce speeds (which were higher than in any previous Olympic luge event.)